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Old 03-16-2006, 04:33 PM   #1
Bakergtt
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Member#: 59207
Join Date: Apr 2004
Chapter/Region: NWIC
Location: Oregon's OC
Vehicle:
'05 X was 98 LGTT

Default I want more HP!!!

Here in full is my current set up in my '98 LGT....

Engine Management
LinkPlus EMS Plug and Play w/ ambient air sensor
Apexi AVC-R Boost Controller
HKS turbo timer

Motor
EJ22T short block w/oil squiters closed deck
Pauter connecting rods
Ceramic/molly coated cast pistons
ARP head studs
JDM V.2 DOHC heads w/~7.8CR
STi timing belt
OE MY98 intake mainfold + TB
Billet fuel rails w/Bosch 550cc top-feed injectors
PVC vent canister
SYMS radiator cap
HKS filter
*UR underdrive pulley
*255lph fuel pump

Turbo and Exhaust
Garrett t3/t4 custom, oil and water cooled, .57 trim and .63a/r (bout 500hp max)
Tial 35mm wastegate routed down stream on DP
Greddy Type-S BOV
TMIC Spearco core 19*(w)2.5*(d)9*(h)
Stock N/A header- Borla couldnt take the pressure/heat
2.25* up-pipe
3*TBE w/3 chamber DynoMax

Drivetrain
OE WRX 5mt
OE WRX clutch
SYMS short throw shifter
STi motor mounts
STi tranny mount
RedLine fluid
OE WRX flywheel
OE WRX diff

Brakes and Suspension
Koni adjustable strut inserts
H&R springs
STi strut tops; front and rear
SYMS strut tower bars; fr & rr
SPO 22mm rear bar w/HD mounts
KartBoy rear links
Whiteline front links
WL ALK
WL rack bushings
WL rear bushing kit
WL rear subframe lock kit
STi V.6 4pot brakes
DBA Slot Front Rotors w/red stuff pads
Slotted rear rotors w/Metal Master pads
Stainless brake lines
MRT brake booster brace

Tires and Wheels
Rota Tarmac2 in gunmetal 17*7.5*
Perelli Pnero Zero M+S 215/45/17
Internal drive tuner lugs

All the rest
Body color matched lower molding
JDM rear tails (red and clear signals)
JDM clear sidemarker lights
Molded scoop opened to 38mm
Morrette head light conversion
Japan aftermarket grill
Sparco Grip pedals w/dead pedal
Sparco Speed Ball shift nob
Sparco 3-point harrness (drivers side)
AutoMeter EGT, OP, WT, and boost gauges
JDM v7 STI Front and Back seats
JDM front bumper cover
IPD Front Skid Plate
STI Blue door trim to match seats
Black Window Button Trim

Coming Soon
Yonaka FMIC (in progress)



Im only getting 231/237 out of it. Its set to 19psi and im maxing my injectors out at 6k with fuel cut set to 7200. I have been chatting with another memember to help me but I wanted to get more ideas from everyone. Its currently tuned using MAP and TP I think but I need to check if thats right.

Thanks
AB
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Old 03-16-2006, 04:36 PM   #2
Bakergtt
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Member#: 59207
Join Date: Apr 2004
Chapter/Region: NWIC
Location: Oregon's OC
Vehicle:
'05 X was 98 LGTT

Default

Here what we have chatted....

Quote:
Originally Posted by darkangelgrafix

Well, youve gone a very good route in your buildup. It seems like it would be very much bullet proof. The one thing that I dont really understand is your power level. I have more or less the same setup with much smaller injectors and im only running 5psi (due to the injectors) yet I've netted 199.7hp and 202.5ft-tq. Youre running bigger injectors and almost 4 times the boost i am yet youre only netting 20 hp more than me. This leads me to believe that your tunning is all fd up. I dont know any tuners up in Oregon, but if you have time, Id run down to Seattle to ESX Motorsports and have those guys tune it. Its really strange that youre maxing out your injectors at 6k rpms too...the sti guys run 24-30 lbs of boost on 550cc injectors and dont max out. I really suspect tuning issues.

You are correct to assume that your head is a little low comp (7.8)...mine are around 8 ~8.1. A lower comp setup will allow you to run higher boost (which the t3/t4 LOVES). If you do want to switch heads, go with the USDM non-AVCS heads. I think theyre 8.2 or 8.5. You could get the ones with AVCS, but you cant use it with link plus. You would have to switch to a utec...

The other thing I see is that youre running a top mount IC and stock intake manifold. These arent power killers, but I would have gone with FMIC and port/polished the manifold.
Quote:
Originally Posted by darkangelgrafix
Well, when building up a motor, there are several factors you need to consider, most importantly cost. For now lets ignore that factor and speak purely technical. Now looking at different heads, we can basically compare them by RPM range and mass airflow. 2.5 heads, stock, anre not the greatest in the world, but with a port and polish, they can get more air through than you would ever need. The problem with those heads is the rpm range. You can max them out at 6500-7000 rpm. In other words, great low end, not so good high end. Then you have the WRX heads. Overall good heads. Double overhead cams give you another 1k on the rpm line, plus there are a few kits for upgrading cams, valves etc. Not the greatest heads for a high comp motor tho. Sti heads, w/out AVCS are the same as the wrx, with more rpms, but still not as great as the 2.5 for compresstion. The best trade off between CR and rpms are the 2.2L heads, ported and polished, although there arent as many aftermarket internals for them. Why exactly do you want to raise your compression? Turboed motors dont really like high compression.

Quote:
Originally Posted by RiosubaGT
I was reading what you wrote in the after market area and you have done a 22t swap. I have been reading, well trying to read up, on what are the best heads to use for the best CR. What I have seen is that the sohc RS heads seem to be the best or am i miss reading things?

As of right now i have jdm v2 heads on a 22t (bought it that way) and im wondering whats the best way about increasing my CR. Do I look for different heads or should I be looking at something else?
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Old 03-16-2006, 05:21 PM   #3
Drac9
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Member#: 9861
Join Date: Sep 2001
Chapter/Region: RMIC
Location: Colorado Springs, CO
Vehicle:
1999 2.35 RS-T w/NOS
Hybrid Rally Blue Pearl

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What is your fuel pressure set at? If you are using top feed bosch injectors there's a multitude of larger injectors you could go to that will work fine with your setup. I would suggest going to a bigger turbo and running most boost. Or just get those injectors working and run more boost on your current setup. Te block will handle it fine. I ran 30psi on pump gas with my stock ej22t block and sohc 2.5 heads. I can mid 12's at about 23psi with modded wrx injectors. Send me some logs from the link and your current base map and I'll see if i see anything the looks out of whack. Also, dump the wastegate to atmosphere- you'll feel a nice gain from that as well.
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Old 03-16-2006, 05:22 PM   #4
Drac9
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Join Date: Sep 2001
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Location: Colorado Springs, CO
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1999 2.35 RS-T w/NOS
Hybrid Rally Blue Pearl

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Oh yeah, and I've got my old 2.5 heads laying around if you're interested in buying them.
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Old 03-16-2006, 06:03 PM   #5
Matt Monson
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Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

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I am going to have to disagree with Darkangel. You have phenominal heads on there and a great CR. Neither of those are your issue. As Drac9 suggested, you need a bigger turbo and more fuel to make more power. The heads will flow fine for a substantially larger turbo, and they flow roughly about the same CFM's as ported Ej25 heads would provide.

His remarks about the ability of Ej25 heads to rev are just BS. And it has nothing at all to do with SOHC vs DOHC. And dropping Ej22 heads in there like they are worth a damn for real power is a joke. PnP'd Ej22T heads will flow about the same as EJ205 heads, which are still lower than EJ25 heads, and definitely less flow than your current heads. You have a great longblock set up there. It's really in the finer details that you will make more power.

Boost, fuel, and tune is where you will break 300whp...
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Old 03-16-2006, 06:35 PM   #6
Bakergtt
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Join Date: Apr 2004
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Location: Oregon's OC
Vehicle:
'05 X was 98 LGTT

Default

Do you guys think my set up the way it is right now should beable to hit my goal of 300whp?

What aspects of the turbo do I need to go bigger? I already have a pretty big turbo.

I cant turn my boost up much more cuz I have had it knock hard at 21 but that was with a mbc so im not sure what it would do with the ebc.

I know I need a better wastegate cuz its starts to go when the turbo is spooling

Not sure what the fuel pressure is. How can I find that out?
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Old 03-16-2006, 11:06 PM   #7
Drac9
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Hybrid Rally Blue Pearl

Default

Well, I had basically the same exact setup as you when i went 12.4 at roughly 3200lbs. That puts me well over 300whp. Only difference was I had bigger injectors and more boost. Your turbo is actually basically the same turbo i did it on too. I ran roughly 24 psi and about 85% duty cycle on the injectors. You need to install a fuel pressure gauge in your fuel line to see what you fuel pressure is. You can install an aftermarket fuel pressure regulator with a gauge and gain a bit by upping your static fuel pressure- depending on what it's at now.
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Old 03-17-2006, 12:01 AM   #8
Sko
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Join Date: Jul 2005
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
2005 Legacy 2.5i
Brilliant Silver Metallic

Default

Sounds like you have a pretty nice setup, not sure how big a custom T3/T4 Garret turbo is though. Have you talked with the guys at Rallitek about your setup? They deal with some custom stuff and could probably help you out with alot of your questions etc.

Nick
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Old 03-17-2006, 02:09 AM   #9
reddevil
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Location: portland
Vehicle:
1990 Legacy wagon
goes 12.387 @ 116.5

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If you can't easily get bigger injectors, maybe a 1500cc 5th injector?
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Old 03-17-2006, 02:36 AM   #10
Kotir
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Join Date: Apr 2002
Chapter/Region: NWIC
Location: Eugene, OR
Vehicle:
1993 Widebody Wagon
748whp e98

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Either your fuel pressure is down or your tune sucks (is super rich) or I guess maybe the injectors aren't 550cc

550cc should make way more than 231whp no problem

Maybe look into modded WRX injectors (they flow ~800cc) just get ones that have been cleaned and flow checked. Pretty cheap too.

Maybe sell your LinkPlus and go with a new generation ecu like a Hydra.

And have PDXTuning tune it since your in Portland.

-Tim
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Old 03-17-2006, 11:04 AM   #11
Bakergtt
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Join Date: Apr 2004
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Vehicle:
'05 X was 98 LGTT

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Sean at Rallitek tuned the car. He has talked about setting it up a different way then MAP/TPS.

I forgot my laptop but will run a grab it at lunch so I can get ya the charts from my link.

Thanks Guys
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Old 03-24-2006, 01:47 PM   #12
Bakergtt
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Member#: 59207
Join Date: Apr 2004
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Location: Oregon's OC
Vehicle:
'05 X was 98 LGTT

Default

Do you guys see anything that could be hendering me from getting more hp?
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Old 03-24-2006, 03:38 PM   #13
96Imprezadent
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1995 Fastest EJ18T
[email protected] Record Run.

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dude. your block is built. your heads are some of the best made.
only thing that maybe you could use is a better cooling system. add fuel and boost man, that engine can take it
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Old 03-24-2006, 04:30 PM   #14
Jaxx
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Vehicle:
The 93 W/EJ20K
Series 10 FRS

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how about water injection ...

does the link+ have a nos trigger?
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